U+24EF NEGATIVE CIRCLED NUMBER FIFTEEN
U+24EF was added to Unicode in version 3.2 (2002). It belongs to the block 
This character is a Other Number and is commonly used, that is, in no specific script. The codepoint has the Numeric value 15.
The glyph is not a composition. It has a Ambiguous East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. In text U+24EF behaves as Ambiguous regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.
The Wikipedia has the following information about this codepoint:
15 (fifteen) is the natural number following 14 and preceding 16. In English, it is the smallest natural number with seven letters in its spelled name.
In spoken English, the numbers 15 and 50 are often confused because they sound similar. When carefully enunciated, they differ in which syllable is stressed: 15 /fɪfˈtiːn/ vs 50 /ˈfɪfti/. However, in dates such as 1500 ("fifteen hundred") or when contrasting numbers in the teens, the stress generally shifts to the first syllable: 15 /ˈfɪftiːn/.
Representations
| System | Representation |
|---|---|
| Nº | 9455 |
| UTF-8 | E2 93 AF |
| UTF-16 | 24 EF |
| UTF-32 | 00 00 24 EF |
| URL-Quoted | %E2%93%AF |
| HTML-Escape | ⓯ |
| Wrong windows-1252 Mojibake | ⯠|
Elsewhere
Complete Record
| Property | Value |
|---|---|
| Age (age) | 3.2 |
| Unicode Name (na) | NEGATIVE CIRCLED NUMBER FIFTEEN |
| Unicode 1 Name (na1) | — |
| Block (blk) | Enclosed_Alphanum |
| General Category (gc) | Other Number |
| Script (sc) | Common |
| Bidirectional Category (bc) | Other Neutral |
| Combining Class (ccc) | Not Reordered |
| Decomposition Type (dt) | None |
| Decomposition Mapping (dm) |
 |
| Lowercase (Lower) | ✘ |
| Simple Lowercase Mapping (slc) |
|
| Lowercase Mapping (lc) |
|
| Uppercase (Upper) | ✘ |
| Simple Uppercase Mapping (suc) |
|
| Uppercase Mapping (uc) |
|
| Simple Titlecase Mapping (stc) |
|
| Titlecase Mapping (tc) |
|
| Case Folding (cf) |
|
| ASCII Hex Digit (AHex) | ✘ |
| Alphabetic (Alpha) | ✘ |
| Bidi Control (Bidi_C) | ✘ |
| Bidi Mirrored (Bidi_M) | ✘ |
| Bidi Paired Bracket (bpb) |
|
| Bidi Paired Bracket Type (bpt) | None |
| Cased (Cased) | ✘ |
| Composition Exclusion (CE) | ✘ |
| Case Ignorable (CI) | ✘ |
| Full Composition Exclusion (Comp_Ex) | ✘ |
| Changes When Casefolded (CWCF) | ✘ |
| Changes When Casemapped (CWCM) | ✘ |
| Changes When NFKC Casefolded (CWKCF) | ✘ |
| Changes When Lowercased (CWL) | ✘ |
| Changes When Titlecased (CWT) | ✘ |
| Changes When Uppercased (CWU) | ✘ |
| Dash (Dash) | ✘ |
| Deprecated (Dep) | ✘ |
| Default Ignorable Code Point (DI) | ✘ |
| Diacritic (Dia) | ✘ |
| East Asian Width (ea) | Ambiguous |
| Extender (Ext) | ✘ |
| FC NFKC Closure (FC_NFKC) |
|
| Grapheme Cluster Break (GCB) | Any |
| Grapheme Base (Gr_Base) | ✔ |
| Grapheme Extend (Gr_Ext) | ✘ |
| Grapheme Link (Gr_Link) | ✘ |
| Hex Digit (Hex) | ✘ |
| Hangul Syllable Type (hst) | Not Applicable |
| Hyphen (Hyphen) | ✘ |
| ID Continue (IDC) | ✘ |
| Ideographic (Ideo) | ✘ |
| ID Start (IDS) | ✘ |
| IDS Binary Operator (IDSB) | ✘ |
| IDS Trinary Operator and (IDST) | ✘ |
| InMC (InMC) | — |
| Indic Positional Category (InPC) | NA |
| Indic Syllabic Category (InSC) | Other |
| ISO 10646 Comment (isc) | — |
| Joining Group (jg) | No_Joining_Group |
| Join Control (Join_C) | ✘ |
| Jamo Short Name (JSN) | — |
| Joining Type (jt) | Non Joining |
| Line Break (lb) | Ambiguous |
| Logical Order Exception (LOE) | ✘ |
| Math (Math) | ✘ |
| Noncharacter Code Point (NChar) | ✘ |
| NFC Quick Check (NFC_QC) | Yes |
| NFD Quick Check (NFD_QC) | Yes |
| NFKC Casefold (NFKC_CF) |
|
| NFKC Quick Check (NFKC_QC) | Yes |
| NFKD Quick Check (NFKD_QC) | Yes |
| Numeric Type (nt) | Numeric |
| Numeric Value (nv) | 15 |
| Other Alphabetic (OAlpha) | ✘ |
| Other Default Ignorable Code Point (ODI) | ✘ |
| Other Grapheme Extend (OGr_Ext) | ✘ |
| Other ID Continue (OIDC) | ✘ |
| Other ID Start (OIDS) | ✘ |
| Other Lowercase (OLower) | ✘ |
| Other Math (OMath) | ✘ |
| Other Uppercase (OUpper) | ✘ |
| Pattern Syntax (Pat_Syn) | ✘ |
| Pattern White Space (Pat_WS) | ✘ |
| Quotation Mark (QMark) | ✘ |
| Radical (Radical) | ✘ |
| Sentence Break (SB) | Other |
| Simple Case Folding (scf) |
|
| Script Extension (scx) | Common |
| Soft Dotted (SD) | ✘ |
| STerm (STerm) | ✘ |
| Terminal Punctuation (Term) | ✘ |
| Unified Ideograph (UIdeo) | ✘ |
| Variation Selector (VS) | ✘ |
| Word Break (WB) | Other |
| White Space (WSpace) | ✘ |
| XID Continue (XIDC) | ✘ |
| XID Start (XIDS) | ✘ |
| Expands On NFC (XO_NFC) | ✘ |
| Expands On NFD (XO_NFD) | ✘ |
| Expands On NFKC (XO_NFKC) | ✘ |
| Expands On NFKD (XO_NFKD) | ✘ |